com.sun.faces.el.PropertyResolverImpl Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of javax.faces Show documentation
Show all versions of javax.faces Show documentation
This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.el;
import javax.el.ELException;
import javax.faces.context.FacesContext;
import javax.faces.el.EvaluationException;
import javax.faces.el.PropertyNotFoundException;
import javax.faces.el.PropertyResolver;
import java.lang.reflect.Array;
import java.util.List;
import com.sun.faces.util.MessageUtils;
/**
*
* Concrete implementation of PropertyResolver
.
*
*/
@SuppressWarnings("deprecation")
public class PropertyResolverImpl extends PropertyResolver {
private PropertyResolver delegate;
// ------------------------------------------- Methods from PropertyResolver
// Specified by javax.faces.el.PropertyResolver.getType(Object,int)
@Override
public Class getType(Object base, int index)
throws EvaluationException, PropertyNotFoundException{
// validates base != null and index >= 0
assertInput(base, index);
if (delegate != null) {
return delegate.getType(base, index);
}
Class> type = base.getClass();
try {
if (type.isArray()) {
Array.get(base, index);
return type.getComponentType();
} else if (base instanceof List) {
Object value = ((List) base).get(index);
return (value != null) ? value.getClass() : null;
} else {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_PROPERTY_TYPE_ERROR_ID,
base));
}
} catch (ArrayIndexOutOfBoundsException aioobe) {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_SIZE_OUT_OF_BOUNDS_ERROR_ID,
base,
index,
Array.getLength(base)));
} catch (IndexOutOfBoundsException ioobe) {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_SIZE_OUT_OF_BOUNDS_ERROR_ID,
base,
index,
((List)base).size()));
}
}
// Specified by javax.faces.el.PropertyResolver.getType(Object,String)
@Override
public Class getType(Object base, Object property) {
assertInput(base, property);
if (delegate != null) {
return delegate.getType(base, property);
}
try {
FacesContext context = FacesContext.getCurrentInstance();
return context.getApplication().getELResolver().getType(context.getELContext(), base,property);
} catch (javax.el.PropertyNotFoundException pnfe) {
throw new PropertyNotFoundException(pnfe);
} catch (ELException elex) {
throw new EvaluationException(elex);
}
}
// Specified by javax.faces.el.PropertyResolver.getValue(Object,int)
@Override
public Object getValue(Object base, int index) {
// validates base and index
if (base == null) {
return null;
}
if (delegate != null) {
return delegate.getValue(base, index);
}
if (base.getClass().isArray()) {
try {
return Array.get(base, index);
} catch (ArrayIndexOutOfBoundsException aioobe) {
return null;
}
} else if (base instanceof List) {
try {
return ((List) base).get(index);
} catch (IndexOutOfBoundsException ioobe) {
return null;
}
} else {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_PROPERTY_TYPE_ERROR_ID,
base));
}
}
// Specified by javax.faces.el.PropertyResolver.getValue(Object,String)
@Override
public Object getValue(Object base, Object property) {
if (delegate != null) {
return delegate.getValue(base, property);
}
try {
FacesContext context = FacesContext.getCurrentInstance();
return context.getApplication().getELResolver().getValue(context.getELContext(), base,property);
} catch (javax.el.PropertyNotFoundException pnfe) {
throw new PropertyNotFoundException(pnfe);
} catch (ELException elex) {
throw new EvaluationException(elex);
}
}
// Specified by javax.faces.el.PropertyResolver.isReadOnly(Object,int)
@Override
public boolean isReadOnly(Object base, int index) {
// validate input
assertInput(base, index);
if (delegate != null) {
return delegate.isReadOnly(base, index);
}
if (base instanceof List || base.getClass().isArray()) {
return false;
} else {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_PROPERTY_TYPE_ERROR_ID,
base));
}
}
// Specified by javax.faces.el.PropertyResolver.isReadOnly(Object,String)
@Override
public boolean isReadOnly(Object base, Object property) {
if (delegate != null) {
return delegate.isReadOnly(base, property);
}
try {
FacesContext context = FacesContext.getCurrentInstance();
return context.getApplication().getELResolver().isReadOnly(context.getELContext(), base,property);
} catch (ELException elex) {
throw new EvaluationException(elex);
}
}
// Specified by javax.faces.el.PropertyResolver.setValue(Object,int,Object)
@Override
public void setValue(Object base, int index, Object value) {
// validate input
assertInput(base, index);
if (delegate != null) {
delegate.setValue(base, index, value);
return;
}
FacesContext context = FacesContext.getCurrentInstance();
Class> type = base.getClass();
if (type.isArray()) {
try {
Array.set(base, index, (context.getApplication().
getExpressionFactory()).coerceToType(value, type
.getComponentType()));
}
catch (ArrayIndexOutOfBoundsException aioobe) {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_SIZE_OUT_OF_BOUNDS_ERROR_ID,
base,
index,
Array.getLength(base)));
}
} else if (base instanceof List) {
try {
// Inherently not type safe, but nothing can be done about it.
//noinspection unchecked
((List) base).set(index, value);
} catch (IndexOutOfBoundsException ioobe) {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_SIZE_OUT_OF_BOUNDS_ERROR_ID,
base,
index,
((List)base).size()));
}
} else {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_PROPERTY_TYPE_ERROR_ID,
base));
}
}
// Specified by
// javax.faces.el.PropertyResolver.setValue(Object,String,Object)
@Override
public void setValue(Object base, Object property, Object value) {
if (delegate != null) {
delegate.setValue(base, property, value);
return;
}
try {
FacesContext context = FacesContext.getCurrentInstance();
context.getApplication().getELResolver().setValue(context.getELContext(), base,property, value);
} catch (javax.el.PropertyNotFoundException | javax.el.PropertyNotWritableException pnfe) {
throw new PropertyNotFoundException(pnfe);
}
catch (ELException elex) {
throw new EvaluationException(elex);
}
}
// ---------------------------------------------------------- Public Methods
public void setDelegate(PropertyResolver delegate) {
this.delegate = delegate;
}
protected static void assertInput(Object base, Object property)
throws PropertyNotFoundException {
if (base == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "base");
throw new PropertyNotFoundException(message);
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "property");
throw new PropertyNotFoundException(message);
}
}
protected static void assertInput(Object base, int index)
throws PropertyNotFoundException {
if (base == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "base");
throw new PropertyNotFoundException(message);
}
if (index < 0) {
throw new PropertyNotFoundException(MessageUtils.getExceptionMessageString(
MessageUtils.EL_OUT_OF_BOUNDS_ERROR_ID,
base,
index));
}
}
}